Why can’t I desaturate on Adaptive Contrast as much as I did when I was at elevation?

Why can’t I desaturate on Adaptive Contrast as much as I did when I was at elevation?

Our adap­tive train­ing sys­tems remove about 7% of the oxy­gen from the air. At Sea Level this reduces the par­tial pres­sure of oxy­gen from 21% down to about 14%, to an approx­i­mate sim­u­lat­ed alti­tude of 10,000 feet.

If you use a sys­tem at ele­va­tion, like Aspen (7000 ft) you will desat­u­rate more than you will at sea lev­el. This chart helps to cor­re­late effec­tive alti­tudes.